src/Model/Model_AttributeReference.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 // File:        ModelAPI_AttributeReference.cxx
   4 // Created:     2 Apr 2014
   5 // Author:      Mikhail PONIKAROV
   6
   7 #include "Model_AttributeReference.h"
   8 #include "Model_Application.h"
   9 #include "Model_Events.h"
  10 #include "Model_Data.h"
  11 #include <ModelAPI_Feature.h>
  12 #include <ModelAPI_Session.h>
  13
  14 #include <TDataStd_Comment.hxx>
  15 #include <TDataStd_AsciiString.hxx>
  16 #include <TDF_Tool.hxx>
  17
  18 using namespace std;
  19
  20 void Model_AttributeReference::setValue(ObjectPtr theObject)
  21 {
  22   if(!theObject)
  23     return;
  24   if (!myIsInitialized || value() != theObject) {
  25       std::shared_ptr<Model_Data> aData = std::dynamic_pointer_cast<Model_Data>(
  26           theObject->data());
  27       TDF_Label anObjLab = aData->label().Father(); // object label
  28
  29     if (owner()->document() == theObject->document()) { // same document, use reference attribute
  30
  31       std::shared_ptr<Model_Document> aDoc =
  32         std::dynamic_pointer_cast<Model_Document>(owner()->document());
  33       myRef->Set(anObjLab);  // references to the object label
  34        // remove external link attributes (if any)
  35       anObjLab.ForgetAttribute(TDataStd_Comment::GetID());
  36       anObjLab.ForgetAttribute(TDataStd_AsciiString::GetID());
  37     } else { // different document: store the document name (comment) and entry (string): external
  38       // if these attributes exist, the link is external: keep reference to access the label
  39       TDataStd_Comment::Set(myRef->Label(), theObject->document()->id().c_str());
  40       TCollection_AsciiString anEntry;
  41       TDF_Tool::Entry(anObjLab, anEntry);
  42       TDataStd_AsciiString::Set(myRef->Label(), anEntry);
  43     }
  44
  45     owner()->data()->sendAttributeUpdated(this);
  46   }
  47 }
  48
  49 ObjectPtr Model_AttributeReference::value()
  50 {
  51   if (myIsInitialized) {
  52     Handle(TDataStd_Comment) aDocID;
  53     if (myRef->Label().FindAttribute(TDataStd_Comment::GetID(), aDocID)) { // external ref
  54       DocumentPtr aRefDoc =
  55         ModelAPI_Session::get()->document(TCollection_AsciiString(aDocID->Get()).ToCString());
  56       if (aRefDoc) {
  57         Handle(TDataStd_AsciiString) anEntry;
  58         if (myRef->Label().FindAttribute(TDataStd_AsciiString::GetID(), anEntry)) {
  59           std::shared_ptr<Model_Document> aDR = std::dynamic_pointer_cast<Model_Document>(aRefDoc);
  60           TDF_Label aRefLab;
  61           TDF_Tool::Label(aDR->featuresLabel().Data(), anEntry->Get().ToCString(), aRefLab);
  62           if (!aRefLab.IsNull()) {
  63             return aDR->object(aRefLab);
  64           }
  65         }
  66       }
  67     } else { // internal ref
  68       std::shared_ptr<Model_Document> aDoc = std::dynamic_pointer_cast<Model_Document>(
  69           owner()->document());
  70       if (aDoc) {
  71         TDF_Label aRefLab = myRef->Get();
  72         return aDoc->object(aRefLab);
  73       }
  74     }
  75   }
  76   // not initialized
  77   return FeaturePtr();
  78 }
  79
  80 Model_AttributeReference::Model_AttributeReference(TDF_Label& theLabel)
  81 {
  82   myIsInitialized = theLabel.FindAttribute(TDF_Reference::GetID(), myRef) == Standard_True;
  83   if (!myIsInitialized) {
  84     myRef = TDF_Reference::Set(theLabel, theLabel);  // not initialized references to itself
  85   } else {
  86     if (owner()) {
  87       std::shared_ptr<Model_Document> aDoc =
  88         std::dynamic_pointer_cast<Model_Document>(owner()->document());
  89     }
  90   }
  91 }
  92
  93 void Model_AttributeReference::setObject(const std::shared_ptr<ModelAPI_Object>& theObject)
  94 {
  95   if (owner() != theObject) {
  96     ModelAPI_AttributeReference::setObject(theObject);
  97     std::shared_ptr<Model_Document> aDoc =
  98       std::dynamic_pointer_cast<Model_Document>(owner()->document());
  99   }
 100 }
 101
 102 Model_AttributeReference::~Model_AttributeReference()
 103 {
 104   std::shared_ptr<Model_Document> aDoc =
 105     std::dynamic_pointer_cast<Model_Document>(owner()->document());
 106   TDF_Label aLab = myRef->Get();
 107 }